Disk furrow-opener.



F. R. PAGKHAM. I

DISK FURROW OPENER.

APPLICATION FILED DEO.13, 1912.

Patented Mar. 3, 1914.

muemto'a l a n i o i a it this FRANK It. PAOKI-lfalli, OF SPRINGFIELD, OHIO, ASSIGNOR TO THE AMERICAN SEEDING MACHINE COMPANY, OF SPRINGFIELD, OHIO, A CORPORATION OF OHIO.

DISK FURROW-GPENER.

noeaeva T all whom it may concern Be it known that I, FRANK it. PACKI-IAM, a citizen of the United vidtates, residing at Springfield, in the county of Clark and State of ()hio, have invented certain new and useful Improvements in Disk Farrow- Openers, of which the following is a specification.

My invention relates to improvements in disk furrow openers, and more particularly to the scraper or shield for the disk, especially that type of scraper or shield which is connected with the lower end or toe of the boot and whose scraping edge extends upwardly and forwardly toward the axial center of the disk in proximity to the convex side of the same.

The object of the invention is to provide a shield or scraper of this type which will be simple and cheap in construction and effective in operation.

Toe scrapers or shields have been in common use in disk furrow openers, the purpose of these scrapers or shields being to protect the seed as it falls into the trench opened by the disk and also to prevent mud and other substances from adhering to the disk. Heretofore it has been usual to so construct these scrapers that the forward scraping or deflecting edge is of convex form, which necessitates the scraper being heated, bent to form and then tempered, all of which is a comparatively expensive oper ation and is eliminated in my improved construction as will be hereinafter described. Also, with scrapers or shields of this type, as heretofore formed, the convex scraping or deflecting edge has a tendency to cause a boiling or turbulency of the earth as it passes the scraper or shield, which results in a great deal of the dirt and trash being thrown upwardly and outwardly, which causes it to find lodgment on the parts of the furrow opener and also on the adjacent 4,5 furrow opener, and accumulate to such an extent as to be detrimental to the proper operation of these devices. My improved construction overcomes this diiliculty to a greatextent and thereby increases the efliciency of the machine in connection with which these devices are used.

r igure 1 Specification of Letters Patent.

Application filed December 13, 1912.

Patented Mar. 3, iltllet.

Serial No. 736,503.

is a side elevation of the furrow opener embodying my improvement, looking at the convex side of the disk. Fig. 2 is a rear view of the disk and shield or scraper showing the relation of these parts when in operative position. Fig. 3 is a side View of the shield or scraper. Fig. l is a view of the rear edge of the shield or scraper.

Like parts are represented by similar characters of reference in the several views.

In the said drawings, 1 represents a disk of the concavoconvex type, rotatably connected with the hanger 2 in any suitable manner.

3 is the usual drag-bar to which the hanger is connected, this drag-bar being pivotally connected to the forward end of the machine in the usual way.

4t represents the boot or conduit, connect-- ed with the hanger 2 by the arm 5, the connection preferably being an adjustable one to permit adjustment of the parts with respect to each other.

My improved scraper or shield is represented by 6 and it is connected to the lower end of the toe of boot 4-, through the medium of the rearwardly projecting shank 6 thereof which is rigidly secured to said boot in any suitable way, such as by riveting. As shown best in Fig. 4.- it will be seen that this shield or scraper is formed perfectly flat which enables the same to be punched to the desired shape from flat sheets of metal. The forward scraping or deflecting edge of this shield or scraper is formed of a concave shape and sharpened by grinding and the scraper is so connected with the boot that its front edge projects forwardly and upwardly back of, but substantially toward the axial center of the disk. As shown best in Fig. 2 it will also be seen that the scraping edge of the shield or scraper approaches the disk at an angle, and the concave forward edge thereof permits the said edge to conform itself to the convex side of the disk without the necessity of any bending o'r shaping of the material of the scraper in any respect whatsoever, after the same has been stamped from the sheet of material from which it is formed.

While the manner of forming this scraper permits a great saving in the cost of construction, there is also a very decided advantage in the functional working thereof. Attention has heretofore been called to the fact that in connection with the old forms of toe scrapers dii'liculty has been encountered by reason of the action of the scraper upon the displaced earth which causes the earth to be so violently disturbed that it will be thrown upwardly and outwardly and accumulate on the parts of the furrow openers.

In my improved form of device it will be observed thatthe entire scraping edge faces the ground and it has been demonstrated in actual practice that its action upon the soil is such as to cause the same to be deflected downwardly to the ground in substantially straight lines instead of throwing the same upwardly and outwardly, as in the old form of devices, thus obviating to a very decided extent the accumulation of the mud and trash on the parts of the furrow openers, which not only better protects the falling seed, but also results in a very decided decrease in the draft of the machine.

Having thus described my invention, I claim:

In a single disk furrow opener, a rotatable concave-convex disk, a boot supported at the rear of said disk, a scraper rigid with the lower end of said boot, said scraper being formed of a flat piece of metal having a concave forward scraping edge so as to permit it to conform to the convex side of said disk, said scraper extending forwardly and upwardly in proximity to said disk so that the con-cave scraping edge of said scraper will face the ground.

In testimony whereof, I have hereunto set my hand this 9th day of December, 1912.

FRANK It. PAOKHAM.

WVi tnesses IV. L. BRALEY, R. H. Krrr.

Copies 0! this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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